Duckstation/dep/rcheevos/include/rc_util.h

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#ifndef RC_UTIL_H
#define RC_UTIL_H
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#include "rc_export.h"
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#include <stddef.h>
#include <stdint.h>
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RC_BEGIN_C_DECLS
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/**
* A block of memory for variable length data (like strings and arrays).
*/
typedef struct rc_buffer_chunk_t {
/* The current location where data is being written */
uint8_t* write;
/* The first byte past the end of data where writing cannot occur */
uint8_t* end;
/* The first byte of the data */
uint8_t* start;
/* The next block in the allocated memory chain */
struct rc_buffer_chunk_t* next;
}
rc_buffer_chunk_t;
/**
* A preallocated block of memory for variable length data (like strings and arrays).
*/
typedef struct rc_buffer_t {
/* The chunk data (will point at the local data member) */
struct rc_buffer_chunk_t chunk;
/* Small chunk of memory pre-allocated for the chunk */
uint8_t data[256];
}
rc_buffer_t;
void rc_buffer_init(rc_buffer_t* buffer);
void rc_buffer_destroy(rc_buffer_t* buffer);
uint8_t* rc_buffer_reserve(rc_buffer_t* buffer, size_t amount);
void rc_buffer_consume(rc_buffer_t* buffer, const uint8_t* start, uint8_t* end);
void* rc_buffer_alloc(rc_buffer_t* buffer, size_t amount);
char* rc_buffer_strcpy(rc_buffer_t* buffer, const char* src);
char* rc_buffer_strncpy(rc_buffer_t* buffer, const char* src, size_t len);
uint32_t rc_djb2(const char* input);
void rc_format_md5(char checksum[33], const uint8_t digest[16]);
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RC_END_C_DECLS
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#endif /* RC_UTIL_H */